Educação ambiental e o trabalho com valores nas reflexões de professores participantes de um curso de formação continuada

A educação ambiental tem sido considerada de fundamental importância para superação da crise ambiental contemporânea, esta resultante de um complexo de relações envolvendo o atual modelo econômico, a ciência e a tecnologia. Nessa proposta destaca-se sua dimensão valorativa, essencial para um trabalho mais abrangente. A pesquisa apresentada, desenvolvida a partir de uma abordagem qualitativa, analisa neste trabalho as reflexões de um grupo de professores da rede pública de ensino de um estado brasileiro, participantes de um curso de formação continuada sobre a educação ambiental e o trabalho com valores. A análise dos dados coletados através da filmagem dos encontros indica algumas das dificuldades encontradas pelos professores ao lidar com o tema, aspectos que devem ser considerados nos programas de formação docente relativos a essa temática

Sustainable university entrepreneurship: Revisiting firm growth patterns

[Abstract]: Previous research on the firm growth of the university spin-offs (USOs) and its drivers yields inconclusive results. Recently, the literature on the high-growth firms (HGFs) has relied on regression quantile methods to study how the effects of growth determinants may differ along the firm growth distribution. This study builds a bridge between the two strands of literature by exploring how firm-specific characteristics may shape sales and employment growth patterns of USOs. To this end, it applies panel data quantile regression models in a sample of 531 Spanish USOs over the period of 2001–2013. The results show that the growth drivers not only differ between employment growth and sales growth but also along the growth distributions

Análisis de régimen sedimentario del paleolago de altura Pleistoceno donde se hallaron los primeros restos dentarios del équido Hippidion devillei, Mendoza-Argentina

En este trabajo se estudia el régimen sedimentario de un paleolago donde fueron encontrados restos que constituyen el primer registro fósil de un équido perteneciente a la especie Hippidion devillei, en la provincia de Mendoza (Argentina). Los niveles lacustres donde se encontró el material dentario compuesto por premolares y molares fueron analizados en detalle mediante perfiles estratigráfico-sedimentológicos realizados a distintos niveles en la comarca de Uspallata al pie del Cordón del Plata. En esta sucesión principalmente limo-arenosa de 29 m de espesor total se describieron las estructuras sedimentarias, la granulometría de los depósitos y las facies principales. Este paleolago, represado por una avalancha de rocas pleistocena (~115Ka) permite reconstruir parcialmente el paleoambiente donde vivió el equino. Se trató de un sistema efímero de tipo barreal con períodos de llenado y secado

TIC, medios y escuelas: sistematización, análisis y difusión de experiencias

Como equipo de investigación, desde el año 2009 venimos trabajando en distintos proyectos que se articulan en torno al interés por la incorporación de los medios y las TIC en espacios escolares. Particularmente hemos abordado esta temática a partir de dos dimensiones que nos parecen centrales: la primera, en relación a los sentidos que circulan en torno a ellas; la segunda, en relación a las prácticas, es decir a los usos y apropiaciones que estas tecnologías generan en procesos educativos particulares. El interés por las prácticas se tradujo en un relevamiento y sistematización de innumerables experiencias de incorporación de TIC. Esta sistematización nos permitió trabajar en dos aspectos que nos parecen centrales: por un lado la difusión y circulación de las experiencias, en este sentido participamos del proyecto “Red  cultural para la recuperación, valoración  y difusión del patrimonio audiovisual de no ficción de Córdoba” subsidiado por la SEU, contribuyendo con numerosas producciones audiovisuales desarrolladas en las escuelas de Córdoba. Por otra parte, el análisis de estas prácticas, nos permitió entender esta problemática en su complejidad y diversidad, identificando distintos aspectos que intervienen en los procesos educativos y reconociendo en ellos distintos tipos de usos de estas tecnologías. En este sentido, nos preocupó la predominancia de un uso instrumental de las mismas que las adapta y reduce a las lógicas escolares tradicionales, en detrimento del potencial que tienen para trabajar desde la comunicación en procesos significativos de enseñanza y aprendizaje. Fue así que decidimos recuperar algunas experiencias que, a nuestro entender, resultan significativas, entre otras cosas, por el protagonismo que otorgan a los estudiantes en procesos de producción, por los modos en que recuperan sus vivencias y sentidos, y trabajan desde la comunicación en pos de favorecer la enseñanza y el aprendizaje. Estas experiencias nos permitieron elaborar un material denominado “Educación con TICS. Ideas para trabajar en la escuela”. El objetivo de este material es acercarnos a los docentes a fin de brindarles algunas herramientas para el trabajo con las tecnologías en el aula. Como equipo que compartimos el interés por trabajar en educación, reconocemos la importancia que adquiere una mirada crítica y reflexiva sobre los procesos educativos, pero más aún, devolver esta mirada a quienes son sus protagonistas. No nos referimos a una relación unidireccional, sino que más bien apostamos a la construcción de conocimiento en diálogo con los docentes, ya que son ellos, unos de los actores centrales de las instituciones educativas

Herbicidal Potential of the Natural Compounds Carvacrol, Thymol, Eugenol, p-Cymene, Citral and Pelargonic Acid in Field Conditions: Indications for Better Performance

In recent years, interest in natural products with herbicidal activity as new tools for integrated weed management has increased. The European Union is demanding a reduction in the number of herbicides used, forbidding use of the most toxic ones, despite the problem of weed resistance increasing. Pelargonic acid (PA) is the only natural herbicide available in Spain. In this work, two field assays were performed with the natural compounds carvacrol (CAR), citral (CIT), eugenol (EUG), thymol (THY), p-cymene (P-CYM), (PA), and the combination of PA with CIT-all except P-CYM formulated by Seipasa-to test their herbicidal efficacy in real conditions. They were compared with commercial PA, glyphosate (GLY) and oxyfluorfen (OXY). In both experiments, GLY achieved the best weed control. Considering the natural herbicides, PA formulated by Seipasa and PA plus CIT were the most effective. From both experiments, some conclusions can be extracted for better herbicidal performance of natural products: (1) use products on sensitive weed species, (2) treat weeds at earlier phenological stages, (3) find the active doses in field conditions, (4) cover weeds well when treating, (5) ensure adequate formulation of products, and (6) develop a strategy for correct application

Potential of different common (Fagopyrum esculentum Moench) and Tartary (Fagopyrum tataricum (L.) Gaertn.) buckwheat accessions to sustainably manage surrounding weeds

Twenty-nine accessions of two buckwheat species (Fagopyrum esculentum Moench (common buckwheat) and Fagopyrum tataricum (L.) Gaertn. (Tartary buckwheat) were evaluated for their allelopathic potential against two resistant weeds, the monocot Lolium rigidum Gaud. and the dicot Portulaca oleracea L. The bulking use of synthetic herbicides and their consequent contamination of the environment and resulting increment of herbicide-resistant weeds, imminently requires a solution to achieve sustainable weed management without chemical inputs. The results obtained in this study suggest that buckwheat accessions can sustainably manage weeds through plant interference as competition or allelopathy. This research showed that accessions differ in their potential for sustainably managing both weeds with F. esculentum accessions being more effective against L. rigidum and F. tataricum accessions against both, monocot and dicot weeds. The chemical profile of buckwheat accessions was evaluated to know the content of polyphenols in common and Tartary buckwheat accessions and to know more about their ability to manage weeds sustainably. Differences in the chemical profile between the two buckwheat species were clear. While common buckwheat accessions showed more orientin, vitexin and hyperoside, Tartary buckwheat accessions had higher amounts of rutin, quercetin and kaempferol. We propose that the screening and selection of accessions with strong polyphenol content and vigorous growth can be a step towards organic farming due to its relation to the weed management.Universidade de Vigo/CISU

Reactivation of Paleozoic structures during Cenozoic deformation in the Cordón del Plata and Southern Precordillera ranges (Mendoza, Argentina)

The tectonic style of the eastern morphostructural units of the Central Andes between 32°20´ and 33°20´S is strongly influenced by pre- Andean structures, especially those developed during the late Carboniferous-Early Permian San Rafael orogeny of the Gondwanan orogenic cycle. Moreover, in the study area pre-Carboniferous rocks were deformed in Late Devonian-early Carboniferous times by the Chanic orog­eny. In this paper we argue that the Cordón del Plata and the Southern Precordillera ranges, first order features of the eastern ranges of the Andes, have been shaped in large part by the Permian event. Our data suggest that the double verging character of the Andean Precordillera fold- thrust belt is mainly the result of the reactivation of Gondwanan structures which conform a fold-thrust belt with distinct characteristics north and south of 33°S. The northern sector of this belt corresponds to a bivergent system, while the southern sector had a widespread east vergence. The vergence of the Chanic structures is more difficult to determine, but we infer a westward vergence in the Frontal Cordillera and western sector of Precordillera, and an eastern vergence in the eastern sector of the Precordillera. The sharp disappearance of the Precordillera morphostructural unit south of 33°S is inferred here to be related to the distribution of inherited Permian structures.El estilo tectónico del sector oriental de las unidades morfoestructurales de los Andes Centrales entre los 32°20´y 33°20´S se encuentra fuertemente influenciado por estructuras pre-andinas, especialmente aquellas desarrolladas durante el Carbonífero superior-Pérmico Inferior y asociadas al orógeno San Rafael del ciclo orogénico Gondwánico. Además, en el área de estudio, las rocas pre-carboníferas se deformaron durante el Devónico Superior y Carbonífero inferior, en relación con la orogenia Chánica. En este trabajo discutimos los rasgos de primer orden del sector oriental de los Andes, que comprende al Cordón del Plata y a la Precordillera Austral, fueron en gran parte modelados a partir del evento pérmico. Nuestros datos sugieren que la doble vergencia de una faja plegada y corrida en la Precordillera Andina es el resultado principalmente de la reactivación de estructuras gondwánicas que conformaron una faja plegada y corrida con características distintivas al norte y sur de los 33°S. El sector norte de la faja corresponde a un sistema bivergente, mientras que el sector sur posee una vergencia predo­minantemente oriental. La vergencia de las estructuras chánicas es más difícil de predecir, pero se sugiere aquí una vergencia hacia el oeste para las estructuras de la Cordillera Frontal y el sector occidental de la Precordillera y otra hacia el este para las estructuras del sector oriental de la Precordillera. Se infiere que la marcada desaparición de la Precordillera como unidad morfoestructural andina al sur de los 33° está relacionada a la distribución de estructuras chánicas y gondwánicas

Dietary Fat Patterns and Outcomes in Acute Pancreatitis in Spain

Background/Objective: Evidence from basic and clinical studies suggests that unsaturated fatty acids (UFAs) might be relevant mediators of the development of complications in acute pancreatitis (AP). Objective: The aim of this study was to analyze outcomes in patients with AP from regions in Spain with different patterns of dietary fat intake. Materials and Methods: A retrospective analysis was performed with data from 1,655 patients with AP from a Spanish prospective cohort study and regional nutritional data from a Spanish cross-sectional study. Nutritional data considered in the study concern the total lipid consumption, detailing total saturated fatty acids, UFAs and monounsaturated fatty acids (MUFAs) consumption derived from regional data and not from the patient prospective cohort. Two multivariable analysis models were used: (1) a model with the Charlson comorbidity index, sex, alcoholic etiology, and recurrent AP; (2) a model that included these variables plus obesity. Results: In multivariable analysis, patients from regions with high UFA intake had a significantly increased frequency of local complications, persistent organ failure (POF), mortality, and moderate-to-severe disease in the model without obesity and a higher frequency of POF in the model with obesity. Patients from regions with high MUFA intake had significantly more local complications and moderate-to-severe disease; this significance remained for moderate-to-severe disease when obesity was added to the model. Conclusions: Differences in dietary fat patterns could be associated with different outcomes in AP, and dietary fat patterns may be a pre-morbid factor that determines the severity of AP. UFAs, and particulary MUFAs, may influence the pathogenesis of the severity of AP

The observed winter circulation at InSight’s landing site and its impact on understanding the year-round circulation and aeolian activity in Elysium Planitia and Gale Crater

The InSight lander landed at 135.62°E, 4.50°N in Elysium Planitia, less than 550km from the landing site of the Mars Science Laboratory Curiosity rover, at 137.44°E, 4.59°S in Gale Crater. Both missions carried a suite of meteorological instruments, but regrettably MSL’s wind sensor was damaged on landing and failed completely after ~two Mars years [1]. The resultant data gaps and biases made it very difficult to properly characterize the diurnal and seasonal cycles of wind speed and direction in Gale Crater, a region of extreme topography containing numerous aeolian features. Fortunately, InSight’s wind sensor does not appear to have been damaged on landing, and is returning excellent wind data for the landing season (Ls~300°, northern winter). This valuable dataset has already allowed us to characterize the Elysium Planitia circulation at one time of year, and - in combination with atmospheric models - provides vital insight into what controls the circulation in this region of Mars. In turn, this better understanding of the regional circulation allows us to better interpret the local scale winds partially measured by MSL